chateauneuf



F. CHATEAUNEUF SHOE SEWING MACHINE. APPLICATION FILED och) 1918;

1,377,31 3', Ymn ted- May 10, 1921-.

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F. CHATEAUNEUF SHOE SEWINGMACHINE. APPLICATION FILED OCT Patented May 10, 1921.

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F. CHATEAUNEUF SHOE SEWING MACHINE- APPLICATION FILED OCT. 4, 191a.

Pa enteway 10,1921.

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UNITED STATES FRANK GHATEAUNEUF, or SWAMPSCOTT,MASSACHUSETTS, ASSIGNOR T0 UNiTED SHOE MACHINERY CORPORATION, OF PATERSON, NEW

OF NEW JERSEY.

1,377,313. Original application filed May 7, 1917,

. SHOE-SEWING MACHINE.

Specification of Letters Patent.

JERSEY, A CORPORATION I Patented Ma 10, 1921.

Serial No. 166,943. Divided and this application fil ed October 4,

1918. Serial No. 256,882.

To all whom it may concern:

Be it known that I, FRANK CHATEAUNEUF, a citizen of the United States, residing at Swampscott, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Shoe- Sewing Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to shoe sewing machines of the class or type employed in sewing inseams of shoes.

The object of the invention is to improve the construction and mode of operation of.

shoe sewing machines of this class and more particularly the work supporting devices for such machines. 7

With this 01)]6013 1n view certain features of the invention relate to a novel and im proved slide locking mechanism which may be embodied with advantage either in the back gage or back rest mechanisms of such machines. y

Other features of the invention relate to a novel and improved back gage mechanism. This mechanism is constructed and arranged to avoid the objectional pounding of the back gage against the shoe and is designed primarily as an improvement onthe back gage mechanism disclosed in applicants Patent, No, 1,240,941, dated September 25, 1917.

The features of the invention will be readily understood from the accompanying drawings illustrating a machine embodying the invention in its preferred form and the following detailed description of the construction therein shown.

In the drawings Figure 1 is a view in front elevation of a machine embodying the invention; Fig. 2 is a view in side elevation of the machine looking from the left; Fig.

8 is a detail view in vertical section taken substantially on the line 3-3 of Fig. 2, and illustrating particularly the back gage and back rest mechanisms; Fig. 4 is a detail view in front elevation, partly broken away, illustrating a portion of the back gage mechanism; and Fig. 5 is a detail sectional view, taken substantially on the line 5-5 of Fig. 4.

The machine illustrated in the drawings is an inseam shoe sewing machine having the same general construction and mode of operation as the machine illustrated and described in the patent to. Eppler, No. 1,108,560, dated August 25, 1914. The machine comprises an oscillating curved hook needle 2, a needle guide 4, a looper 6, a thread arm 8, a take-up 10, a tension device 12, a channel guide 14, a back gage 16, and

a back rest 90.

The needle, needle guide, looper, thread arm, take-up, tension device and channel guide have the same construction, arrangement and "mode of operation as "the corre-' sponding parts of the machine illustrated and described in applicants pending application, Serial No. 166,943,, of which the present application constitutes a division.

The back gage indicated at 16 is secured to the forward end 'of a slide 18 mounted guides in a larger slide 20. The slide20 1S mountedin guides in the frame of the for imparting these movements to the slide 20 comprises a cam lever 24 pivoted at 26 on the frame and having an arm 28 which is connected by'a link 30 with the slide 20. The other arm 32 of the cam lever carries a cam roll34 engaging in "a cam groove in the cam disk 36 mounted on. the main shaft 38 of the machine. The rear end of the link 30 is connected with the arm 28 of the cam lever 24 by an eccentric stud 39. By turning the eccentricstud 39 the limits of movement of the slide 20 may be adjusted. The forward end of the link 30 fits over a boss 40 (Fig. 3) formed on the slide 20. The slide 18 is acted upon by a spring 42 coiledabout astud 44 secured in the arm 28 of the cam lever 24, one end of whichen gages behind apin'46 mounted in the slide 18 and extending through a slot in the plate 22, and the other end of 42 upon the slide 18. As the slide 20 is moved forwardly to carry the back gage into engagement with the shoe, this slide and the slide 18 are free to move relatively, and the slide 18 is held by the spring 42 in its limiting forward position relative to the slide 20 until the back gage engages the shoe. After the back gage engagesthe shoe the spring 42 permits the slide 18 to yield relatively to the slide 20 ano the latter slide then moves forwardly independently of the slide 18 to its limiting forward position. When the slide 20 has completed its forward movement, and before the needle retracts from the work, the slide 18 is locked to the slide 20 so as to furnish a firm support for the work to resist the backward pull of the needle as the needle ictracts from the work. Before the slide 20 is retracted, the slide 18 is unlocked relatively to the slide 20. As the slide 20 is retracted the slide 18, after reaching its limiting position relative to the slide 20, is retracted with the latter slide. The mechanism for locking the slide 18 to the slide 20. comprises a locking bolt 52 (Fig. extending through a slot 54 in the slide 18 and having a head 56 arranged to engage the inner face of the slide 18. The locking bolt 52 is formed with a series of screw threads 58 enga ing corresponding screwthreads formed in the interior of the boss 40 on the slide 20. The rotation of'the bolt 52 in one direction will cause the head 56 of the bolt forcibly to engage the inner face of the slide 18 and lock this slide to the slide 20, while the turning of the bolt in the opposite direction will release the head 56 of the bolt from engagement with the slide 18 to ,unlock said slide relative to the slide 20. The mechanism for turning the locking bolt comprises an arm 60 seoured to the outer end of the bolt, a lever 62 loosely mounted on the bolt, and a spring 64 coiled about the bosses 66 and formed respectively on the arm and on the lever, said spring having one end engaged with the rear side of a pin 70 mounted in the arm 60 and its other end engaged with the front side of a pin 72 mounted in the lower arm of the lever 62. The spring 64- tends to turn the arm 60 and the lever 62 in opposite directions, or to turn the arm and the locking bolt 52 in a direction relative to the lever 62 to cause the bolt to lock the slide 18 to the slide 20. The relative movement of the arm 60 and the lever 62 under the action of the spring 64 is limited by the engagement of a lug 74 (Fig. 5) formed on the boss 66 with an abutment face 76 formed at one end of a recess 78 in the boss 68 into which the lug 74 projects. l Vhen the upper arm of the lever 62 is swung rearwa-rdly, the arm 66 is actuated through the spring 64 to turn the look ing bolt 52 until the head 56 of the bolt engages the slide 18 to lock the same to the slide 20. As the swinging movement of the lever 62 continues after the head of the locking bolt engages the slide 18, the abutment face 76 on the boss 68 leaves the lug 74 and the locking bolt is then held in locked position through the action of the spring 64. When the upper arm of the lever 62 is swung forwardly, the arm 60 and the locking bolt are held in locked position by the action of the spring 64 until the abutment face 76 engages the lug 74. The arm 60 is then actuated to turn the looking bolt in a direction to release the head 56 thereof from the slide 18 to unlock the latter slide. The lever 62 is actuated by means of a cam lever 80 pivoted at 82 on the frame and connected with the upper arm of the lever 62 by a link 84. The cam lever 80 carries a cam roll 86 engaging a cam groove in a cam disk 88 mounted on the main shaft of the machine. The arrangement of the actuating mechanism for the .lever 62 so that the locking movement of the lever is in excess of that required to lock the slide 18 to the slide 20 insures the locking of the slide 18 under all conditions and eliminates the necessity of provisions for adjustment to take up wear in the locking mechanism. The forward movement of the slide 18 relative to the slide20 is limited by the engageient of the rear wall of the slot 54 with the locking bolt 52.

' The back gage mechanism above described has the following mode of operation during each cycle of the machine. Starting with the slide 20 in retracted position, the slide 18 then being unlocked relatively to the slide 20 and held in its forward position with the rear wall of the slot 54 in engagement with the lock bolt 52 by the action of the spring 42, as the slide 20 moves forwardly the slide 18 moves forwardly therewith until the back gage engages the shoe. This arrests the forward movement of the slide 18 and the slide 20 then moves forward independently of the slide 18 to its limiting forward position. Before the needle retracts from the work the slide 18 is locked to the slide 20 so that the back gage is held rigidly against the backward pull of the needle as the needle retracts from the work. Before the slide 20 is retracted, the slide 18 is unlocked relatively to the slide 20 and the slide 18 is retracted to carry the back gage away from the work during the retracting movement of the slide 20 through the engagement of the rear wall of the slot 54 with the locking bolt 52. With this construction the shoe does not receive the thrust of the whole back gage mechanism as the back gage engages the shoe, but only that of the slide 18 which is comparatively light in construction, and that of the spring 42 acting on the slide. This construction obviates, therefore, to a large extent, the objectionable pounding of the back gage against the shoe.

The back rest indicated at is carried at the forward end of a slide 92 mounted in suitable guides in the frame of the machine and held therein by plates-94. The slide 92- is acted upon by a spring-actuated arm 96 pivoted upon a stud 98 and formed with a slot 100 in which engages a pin 102 mounted on the slide. The arm 96 is acted upon by a coiled spring 104 coiled about the stud 98, one end of which engages a projection 106 on the arm 96, and the other end of which engages a projection 108 on a collar or sleeve 110 secured to the upper end of stud 98. This spring tends to swing the arm 96 forwardly, and thus to move the slide 92 forwardly in its guides to advance the back rest. When the slide 92 is free to move in its guides, the back rest accommodates itself to preferably at substantially all times except during the feeding of the work, the back rest is locked in position so as to assist in holding the shoe in position. In the construction shown, the locking mechanism for the back rest comprises a locking bolt 112 (Fig. 3) passing through a slot 114 in the slide 92, and provided with a series of screw threads 116 engaging a series of corresponding screw threads in a bushing1l8 secured in the frame of the machine. The locking bolt 112 is formed with an enlargement or collar 120 arranged in an opening in the forward retaining plate 94 to engage the outer face of the slide 92. By turning the locking bolt 112 in one direction, the collar 120 is caused forcibly to engage the outer face of the slide 92 to lock the slide in position in its guides in the frame, and by turning the locking bolt in the opposite direction the collar 120 is disengaged fromthe outer face of the slide to unlock the slide. The mechanism for turning the locking bolt 112 is similar to the mechanism for turning the locking bolt 52, and comprises an arm 122 secured to the outer end of the locking bolt 112, a lever 124 loosely mounted upon the locking bolt, and a spring 126 coiled about the bosses 128 and 130 formed respectively on the arm 122 and on the lever 124, one end of said spring engaging the rear side of a pin 132 mounted in the arm 122, and the other end of the spring engaging the front side of a pin 134 mounted in the lower arm of the lever 124. The spring 126 tends to turn the arm 122 and the lever 124 in opposite directions, or to turn the locking bolt relatively to the lever 124 in a direction to engage the collar 120 with the outer face of the slide 92. The relative turning movement of the arm 122 and the lever 124 under the action of the spring 126 is limited by the jects. [As the upper arm of the lever 124 is swung rearwardly, the arm 122 is actuated through the spring 126, during the first part of the movement of the lever, to turn the locking bolt in a direction to engage the collar 120 with the outer face of the slide 92 to lock the slide. "As thelever 124 continues to swing after the collar 120 has engaged the slide 92, the abutment face 138 leaves the lug 136 and the locking bolt is held in locked position by'the action of the spring 126. As the upper arm of the lever 124 is swung forwardly, the locking bolt is held in locked position by the action of thespring 126 until the abutment face 138 engages the lug 136.

The arm 122 is then actuated to turn the locking bolt in a direction to unlock the slide.

The mechanism for thus actuating the lever" 124 comprises a cam lever 142 pivoted upon the stud 144 and connected by a link 146 I with the upper armof the lever 124. The

cam lever 142 carries a cam roll 148 engaging in a cam groove in the cam disk 88.

Having explained thenature and object of the invention, and having specifically described a machine embodying the invention in its preferred form, what is claimed is: I 1

1. An inseam'shoe sewing machine, having in combination, stitch forming devices including a hook needle, a work supporting device, a slide upon which said deviceis mounted, means for locking the slide in position during eachcycle of'operations comprising a threaded rod, a device into which the rod is threaded, an abutment actuated by the relative turning movement of the rod and said device for engaging the slide to lock the same, and means for relatively turning the rod and said device to actuate the abutment to lock and unlock theslide.

2. An inseam shoe sewing machine, having in combination, stitch forming devices including a hook needle, a work supporting device, a slide upon which said device is mounted, means for locking the slide in position during each cycle of operations comprising a threaded rod, a relatively fixed device into which the rod is threaded, an abutment carried by the rod and'arranged to engage the slide to lock the same, and

means for turning the rod to move the abut mentto lock and unlock the slide.

3. An inseam shoe sewing machlne, hav:

ing incombination, stitch forming devices including a hook needle, back gage mechanism comprising a slide, a second slide mounted in guides in the first slide, means for actuating the first slide to carry the back gage toward and from the shoe, a rod threaded into the first slide, an abutment carried by the rod and arranged to engage the second slide to lock the same to the first slide, and means for turning the rod to lock and unlock the second slide relatively to the first slide.

L. All inseam shoe sewing machine, having in combination, stitch forming devices including a hook needle, a Work supporting device, a slide upon which said device is mounted, a threaded rod, a relatively fixed device into which said rod is threaded, an abutment carried by the rod and arranged to engage the slide to lock the same, an arm secured to the rod, a lever pivoted on the rod, a spring connecting the lever and the arm and tending to swing the arm to turn the rod relatively to the lever in a direction to lock the slide, abutments formed on the arm and the lever for engagement to limit the relative movement of the arm and the lever under the action 01" the spring, and

means for actuating the lever to lock and unlock the slide during each cycle of opera tions.

FRANK GHATEAUNEUF. 

